initial buildroot for linux 5.15

package/capnproto/0001-mutex-Fix-build-on-32-bit-architectures-using-64-bit-time_t.patch

@@ -0,0 +1,37 @@
+From e2a05a19e9dc51287e19cc9f11fd91449219e361 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 15 Nov 2020 12:10:28 -0800
+Subject: [PATCH] mutex: Fix build on 32-bit architectures using 64-bit time_t
+
+mutex code uses SYS_futex, which it expects from system C library.
+in glibc (/usr/include/bits/syscall.h defines it in terms of of NR_futex)
+rv32 is using 64bit time_t from get go unlike other 32bit architectures
+in glibc, therefore it wont have NR_futex defined but just NR_futex_time64
+this aliases it to NR_futex so that SYS_futex is then defined for rv32
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+[Retrieved from:
+https://github.com/capnproto/capnproto/commit/e2a05a19e9dc51287e19cc9f11fd91449219e361]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ c++/src/kj/mutex.c++ | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/c++/src/kj/mutex.c++ b/c++/src/kj/mutex.c++
+index c81cead7b..e1594b117 100644
+--- a/c++/src/kj/mutex.c++
++++ b/c++/src/kj/mutex.c++
+@@ -39,7 +39,13 @@
+ 
+ #ifndef SYS_futex
+ // Missing on Android/Bionic.
++#ifdef __NR_futex
+ #define SYS_futex __NR_futex
++#elif defined(SYS_futex_time64)
++#define SYS_futex SYS_futex_time64
++#else
++#error "Need working SYS_futex"
++#endif
+ #endif
+ 
+ #ifndef FUTEX_WAIT_PRIVATE

package/capnproto/Config.in

@@ -0,0 +1,28 @@
+config BR2_PACKAGE_CAPNPROTO
+	bool "capnproto"
+	depends on BR2_USE_MMU
+	depends on BR2_HOST_GCC_AT_LEAST_5 # C++14
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5 # C++14
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_TOOLCHAIN_HAS_ATOMIC
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735
+	depends on BR2_TOOLCHAIN_HAS_UCONTEXT
+	help
+	  Cap'n Proto is an insanely fast data interchange format
+	  and capability-based RPC system. Think JSON, except
+	  binary. Or think Protocol Buffers, except faster. In
+	  fact, in benchmarks, Cap'n Proto is INFINITY TIMES
+	  faster than Protocol Buffers.
+
+	  https://capnproto.org/index.html
+
+comment "capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic, ucontext and not gcc bug 64735"
+	depends on BR2_USE_MMU
+	depends on !BR2_HOST_GCC_AT_LEAST_5 || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_5 || \
+		!BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_TOOLCHAIN_HAS_ATOMIC || \
+		BR2_TOOLCHAIN_HAS_GCC_BUG_64735 || \
+		!BR2_TOOLCHAIN_HAS_UCONTEXT

package/capnproto/capnproto.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256	6d8b43a7ec2a764b4dfe4139a7cdd070ad9057f106898050d9f4db3754b98820  capnproto-0.8.0.tar.gz
+sha256	9564998c8d7f270a61a8b89869a8d17a9d5e3783b64027788b5e339ec8479e10  LICENSE

package/capnproto/capnproto.mk

@@ -0,0 +1,33 @@
+################################################################################
+#
+# capnproto
+#
+################################################################################
+
+CAPNPROTO_VERSION = 0.8.0
+CAPNPROTO_SITE = $(call github,capnproto,capnproto,v$(CAPNPROTO_VERSION))
+CAPNPROTO_LICENSE = MIT
+CAPNPROTO_LICENSE_FILES = LICENSE
+CAPNPROTO_CPE_ID_VENDOR = capnproto
+CAPNPROTO_INSTALL_STAGING = YES
+# Fetched from Github with no configure script
+CAPNPROTO_AUTORECONF = YES
+CAPNPROTO_CONF_OPTS = --with-external-capnp
+# Needs the capnproto compiler on the host to generate C++ code from message
+# definitions
+CAPNPROTO_DEPENDENCIES = host-autoconf host-capnproto
+ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
+CAPNPROTO_CONF_ENV += LIBS=-latomic
+endif
+# The actual source to be compiled is within a 'c++' subdirectory
+CAPNPROTO_SUBDIR = c++
+
+ifeq ($(BR2_PACKAGE_OPENSSL),y)
+CAPNPROTO_CONF_OPTS += --with-openssl
+CAPNPROTO_DEPENDENCIES += openssl
+else
+CAPNPROTO_CONF_OPTS += --without-openssl
+endif
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))